body 
{
    margin: 0px;
    padding: 0px;
}

#login_container 
{
    /* margin */
    margin: 0 auto;
    margin-top: 200px;
    /* 边框 */
    border-radius: 10px;
    /* padding */
    padding: 20px 50px;
    /* content */
    width: 400px;
    height: 300px;
    /* text-align: center; */

    background-color: white;
    
}

#login_container>h1 
{
    color: rgba(95, 108, 159, 0.84);
    text-align: center;
}

.login_form>.form_group 
{
    margin-top: 20px;

    text-align: center;
}


.form_group>input 
{
    margin: 0, auto;
    

    border-width:1px;
    border-style:solid;
    border-color:black;

    padding: 5px 5px;

    background-color: white;

    width: 300px;
    color: black;
}

.login_form>button 
{
    display: block;

    margin: 0 auto;
    margin-top: 30px;

    border-radius: 20px;

    background-color: white;

    width: 150px;
    height: 25px;
    
    font-size: 15px;
}

